先进光源磁铁支撑基座稳定性的实验研究  

Experimental study on magnet support plinths of advanced light source

作　　者：李春华[1,2] 王梓豪 周宁闯[1] 董岚 王小龙[1] 屈化民[1] Li Chunhua;Wang Zihao;Zhou Ningchuang;Dong Lan;Wang Xiaolong;Qu Huamin(Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院高能物理研究所,北京100049 [2]中国科学院大学,北京100049

出　　处：《强激光与粒子束》2021年第3期78-83,共6页High Power Laser and Particle Beams

基　　金：国家重点研发计划支持项目(2016YFA0402004)。

摘　　要：基座作为磁铁支架的基础,其制作工艺以及与地面连接固定方式的不同将影响磁铁与支架的稳定性。基于先进光源对磁铁支撑系统稳定性的极高要求,开展了基座安装浇筑实验,选取工程上常用的几种混凝土施工工艺,制作统一外形尺寸的实验件,通过锤击法逐一测试其固有频率,评估其稳定性,得到二次灌浆可有效提高稳定性、环氧基灌浆料获得的稳定性优于水泥基灌浆料等结论。基于固有频率测试结果,以HEPS支撑系统为例分析了不同的基座安装方式对系统模态的影响。As the installation foundation of magnet support,the plinth is critical for the stability of the whole support unit.Different fabrication and installation processes of plinths make significant differences in performance of the support unit.Based on the stringent requirements of advanced synchrotron light source for the mechanical stability of magnets,the plinth installation pouring experiment was carried out.Several concrete construction techniques commonly applied in practice were tested with the plinths of uniform shape and size.The natural frequency of each plinth was measured by hammering method and its stability was evaluated.It is concluded from the test result that secondary grouting can effectively improve the stability of the plinth and the plinth of epoxy-based grouting shows better performance in stability than that of cement-based grouting.Based on the natural frequency test result,the influence of the plinth installation on the system mode is analyzed with the support system of High Energy Photon Source as an example.The experimental results have certain reference value for the plinth design of similar machines.

关 键 词：同步辐射光源 磁铁支撑 基座 模态 稳定性 

分 类 号：TL503[核科学技术—核技术及应用]